Measurement of J/psi production in pp collisions at root s=7 TeV

R. Aaij; B. Adeva; M. Adinolfi; C. Adrover; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; P. Alvarez Cartelle; A. A. Alves; S. Amato; Y. Amhis; J. Amoraal; R. B. Appleby; O. Aquines Gutierrez; L. Arrabito; M. Artuso; E. Aslanides; G. Auriemma; S. Bachmann; D. S. Bailey; V. Balagura; W. Baldini; R. J. Barlow; C. Barschel; S. Barsuk; A. Bates; C. Bauer; T. Bauer; I. Bediaga; K. Belous; I. Belyaev; E. Ben-Haim; M. Benayoun; G. Bencivenni; R. Bernet; M. -O. Bettler; M. van Beuzekom; S. Bifani; A. Bizzeti; P. M. Bjornstad; T. Blake; F. Blanc; C. Blanks; J. Blouw; S. Blusk; A. Bobrov; V. Bocci; A. Pellegrino; LHCb Collaboration

doi:10.1140/epjc/s10052-011-1645-y

Measurement of J/psi production in pp collisions at root s=7 TeV

R. Aaij^*, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander, P. Alvarez Cartelle, A. A. Alves, S. Amato, Y. Amhis, J. Amoraal, R. B. Appleby, O. Aquines Gutierrez, L. Arrabito, M. Artuso, E. Aslanides, G. AuriemmaS. Bachmann, D. S. Bailey, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, A. Bates, C. Bauer, T. Bauer, I. Bediaga, K. Belous, I. Belyaev, E. Ben-Haim, M. Benayoun, G. Bencivenni, R. Bernet, M. -O. Bettler, M. van Beuzekom, S. Bifani, A. Bizzeti, P. M. Bjornstad, T. Blake, F. Blanc, C. Blanks, J. Blouw, S. Blusk, A. Bobrov, V. Bocci, A. Pellegrino, LHCb Collaboration

^*Corresponding author for this work

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Abstract

The production of J/psi mesons in proton-proton collisions at root s = 7 TeV is studied with the LHCb detector at the LHC. The differential cross-section for prompt J/psi production is measured as a function of the J/psi transverse momentum p(T) and rapidity y in the fiducial region p(T) is an element of [0; 14] GeV/c and y is an element of [2.0; 4.5]. The differential cross-section and fraction of J/psi from b-hadron decays are also measured in the same p(T) and y ranges. The analysis is based on a data sample corresponding to an integrated luminosity of 5.2 pb(-1). The measured cross-sections integrated over the fiducial region are 10.52 +/- 0.04 +/- 1.40(-2.20)(+1.64) mu b for prompt J/psi production and 1.14 +/- 0.01 +/- 0.16 mu b for J/psi from b-hadron decays, where the first uncertainty is statistical and the second systematic. The prompt J/psi production cross-section is obtained assuming no J/psi polarisation and the third error indicates the acceptance uncertainty due to this assumption.

Original language	English
Article number	1645
Number of pages	17
Journal	The European Physical Journal C
Volume	71
Issue number	5
DOIs	https://doi.org/10.1140/epjc/s10052-011-1645-y
Publication status	Published - May-2011

Keywords

OCTET QUARKONIA PRODUCTION
P(P)OVER-BAR COLLISIONS
HADRONIC COLLISIONS
S=1.8 TEV
DECAYS
HADROPRODUCTION
FRAGMENTATION
TEVATRON
PAIR
PSI

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Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amhis, Y., Amoraal, J., Appleby, R. B., Gutierrez, O. A., Arrabito, L., Artuso, M., Aslanides, E., ... LHCb Collaboration (2011). Measurement of J/psi production in pp collisions at root s=7 TeV. The European Physical Journal C, 71(5), Article 1645. https://doi.org/10.1140/epjc/s10052-011-1645-y

@article{d11ee0f1da6142559a5c2c659ae14818,

title = "Measurement of J/psi production in pp collisions at root s=7 TeV",

abstract = "The production of J/psi mesons in proton-proton collisions at root s = 7 TeV is studied with the LHCb detector at the LHC. The differential cross-section for prompt J/psi production is measured as a function of the J/psi transverse momentum p(T) and rapidity y in the fiducial region p(T) is an element of [0; 14] GeV/c and y is an element of [2.0; 4.5]. The differential cross-section and fraction of J/psi from b-hadron decays are also measured in the same p(T) and y ranges. The analysis is based on a data sample corresponding to an integrated luminosity of 5.2 pb(-1). The measured cross-sections integrated over the fiducial region are 10.52 +/- 0.04 +/- 1.40(-2.20)(+1.64) mu b for prompt J/psi production and 1.14 +/- 0.01 +/- 0.16 mu b for J/psi from b-hadron decays, where the first uncertainty is statistical and the second systematic. The prompt J/psi production cross-section is obtained assuming no J/psi polarisation and the third error indicates the acceptance uncertainty due to this assumption.",

keywords = "OCTET QUARKONIA PRODUCTION, P(P)OVER-BAR COLLISIONS, HADRONIC COLLISIONS, S=1.8 TEV, DECAYS, HADROPRODUCTION, FRAGMENTATION, TEVATRON, PAIR, PSI",

author = "R. Aaij and B. Adeva and M. Adinolfi and C. Adrover and A. Affolder and Z. Ajaltouni and J. Albrecht and F. Alessio and M. Alexander and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and Y. Amhis and J. Amoraal and Appleby, {R. B.} and Gutierrez, {O. Aquines} and L. Arrabito and M. Artuso and E. Aslanides and G. Auriemma and S. Bachmann and Bailey, {D. S.} and V. Balagura and W. Baldini and Barlow, {R. J.} and C. Barschel and S. Barsuk and A. Bates and C. Bauer and T. Bauer and I. Bediaga and K. Belous and I. Belyaev and E. Ben-Haim and M. Benayoun and G. Bencivenni and R. Bernet and Bettler, {M. -O.} and {van Beuzekom}, M. and S. Bifani and A. Bizzeti and Bjornstad, {P. M.} and T. Blake and F. Blanc and C. Blanks and J. Blouw and S. Blusk and A. Bobrov and V. Bocci and A. Pellegrino and {LHCb Collaboration}",

year = "2011",

month = may,

doi = "10.1140/epjc/s10052-011-1645-y",

language = "English",

volume = "71",

journal = "The European Physical Journal C",

issn = "1434-6044",

publisher = "Springer",

number = "5",

}

Aaij, R, Adeva, B, Adinolfi, M, Adrover, C, Affolder, A, Ajaltouni, Z, Albrecht, J, Alessio, F, Alexander, M, Alvarez Cartelle, P, Alves, AA, Amato, S, Amhis, Y, Amoraal, J, Appleby, RB, Gutierrez, OA, Arrabito, L, Artuso, M, Aslanides, E, Auriemma, G, Bachmann, S, Bailey, DS, Balagura, V, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Bates, A, Bauer, C, Bauer, T, Bediaga, I, Belous, K, Belyaev, I, Ben-Haim, E, Benayoun, M, Bencivenni, G, Bernet, R, Bettler, M-O, van Beuzekom, M, Bifani, S, Bizzeti, A, Bjornstad, PM, Blake, T, Blanc, F, Blanks, C, Blouw, J, Blusk, S, Bobrov, A, Bocci, V, Pellegrino, A & LHCb Collaboration 2011, 'Measurement of J/psi production in pp collisions at root s=7 TeV', The European Physical Journal C, vol. 71, no. 5, 1645. https://doi.org/10.1140/epjc/s10052-011-1645-y

TY - JOUR

T1 - Measurement of J/psi production in pp collisions at root s=7 TeV

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Adrover, C.

AU - Affolder, A.

AU - Ajaltouni, Z.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amhis, Y.

AU - Amoraal, J.

AU - Appleby, R. B.

AU - Gutierrez, O. Aquines

AU - Arrabito, L.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Bachmann, S.

AU - Bailey, D. S.

AU - Balagura, V.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Bates, A.

AU - Bauer, C.

AU - Bauer, T.

AU - Bediaga, I.

AU - Belous, K.

AU - Belyaev, I.

AU - Ben-Haim, E.

AU - Benayoun, M.

AU - Bencivenni, G.

AU - Bernet, R.

AU - Bettler, M. -O.

AU - van Beuzekom, M.

AU - Bifani, S.

AU - Bizzeti, A.

AU - Bjornstad, P. M.

AU - Blake, T.

AU - Blanc, F.

AU - Blanks, C.

AU - Blouw, J.

AU - Blusk, S.

AU - Bobrov, A.

AU - Bocci, V.

AU - Pellegrino, A.

AU - LHCb Collaboration

PY - 2011/5

Y1 - 2011/5

N2 - The production of J/psi mesons in proton-proton collisions at root s = 7 TeV is studied with the LHCb detector at the LHC. The differential cross-section for prompt J/psi production is measured as a function of the J/psi transverse momentum p(T) and rapidity y in the fiducial region p(T) is an element of [0; 14] GeV/c and y is an element of [2.0; 4.5]. The differential cross-section and fraction of J/psi from b-hadron decays are also measured in the same p(T) and y ranges. The analysis is based on a data sample corresponding to an integrated luminosity of 5.2 pb(-1). The measured cross-sections integrated over the fiducial region are 10.52 +/- 0.04 +/- 1.40(-2.20)(+1.64) mu b for prompt J/psi production and 1.14 +/- 0.01 +/- 0.16 mu b for J/psi from b-hadron decays, where the first uncertainty is statistical and the second systematic. The prompt J/psi production cross-section is obtained assuming no J/psi polarisation and the third error indicates the acceptance uncertainty due to this assumption.

AB - The production of J/psi mesons in proton-proton collisions at root s = 7 TeV is studied with the LHCb detector at the LHC. The differential cross-section for prompt J/psi production is measured as a function of the J/psi transverse momentum p(T) and rapidity y in the fiducial region p(T) is an element of [0; 14] GeV/c and y is an element of [2.0; 4.5]. The differential cross-section and fraction of J/psi from b-hadron decays are also measured in the same p(T) and y ranges. The analysis is based on a data sample corresponding to an integrated luminosity of 5.2 pb(-1). The measured cross-sections integrated over the fiducial region are 10.52 +/- 0.04 +/- 1.40(-2.20)(+1.64) mu b for prompt J/psi production and 1.14 +/- 0.01 +/- 0.16 mu b for J/psi from b-hadron decays, where the first uncertainty is statistical and the second systematic. The prompt J/psi production cross-section is obtained assuming no J/psi polarisation and the third error indicates the acceptance uncertainty due to this assumption.

KW - OCTET QUARKONIA PRODUCTION

KW - P(P)OVER-BAR COLLISIONS

KW - HADRONIC COLLISIONS

KW - S=1.8 TEV

KW - DECAYS

KW - HADROPRODUCTION

KW - FRAGMENTATION

KW - TEVATRON

KW - PAIR

KW - PSI

U2 - 10.1140/epjc/s10052-011-1645-y

DO - 10.1140/epjc/s10052-011-1645-y

M3 - Article

SN - 1434-6044

VL - 71

JO - The European Physical Journal C

JF - The European Physical Journal C

IS - 5

M1 - 1645

ER -

Measurement of J/psi production in pp collisions at root s=7 TeV

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Keywords

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